mojo/tools/rev_sdk.py

   1 #!/usr/bin/env python
   2 # Copyright 2014 The Chromium Authors. All rights reserved.
   3 # Use of this source code is governed by a BSD-style license that can be
   4 # found in the LICENSE file.
   5
   6 """Tool to roll Mojo into Chromium. See:
   7 https://github.com/domokit/mojo/wiki/Rolling-code-between-chromium-and-mojo#mojo---chromium-updates-sdk--edk
   8 """
   9
  10 import os
  11 import sys
  12 from utils import commit
  13 from utils import chromium_root_dir
  14 from utils import system
  15
  16 sdk_prefix_in_chromium = "third_party/mojo/src"
  17 sdk_dirs_to_clone = [
  18   "mojo/edk",
  19   "mojo/public",
  20   "nacl_bindings",
  21 ]
  22
  23 sdk_dirs_to_not_clone = [
  24   "mojo/public/cpp/application",
  25   "mojo/public/interfaces/application",
  26   "mojo/public/interfaces/network",
  27   "mojo/public/java/application",
  28 ]
  29
  30 # Individual files to preserve within the target repository during roll. These
  31 # are relative to |sdk_prefix_in_chromium| but are not maintained in the mojo
  32 # repository.
  33 preserved_chromium_files = [
  34   "mojo/edk/DEPS",
  35   "mojo/public/DEPS",
  36   "mojo/public/platform/nacl/DEPS",
  37   "nacl_bindings/DEPS",
  38 ]
  39
  40 # A dictionary mapping dirs to clone to their destination locations in Chromium.
  41 dirs_to_clone = {}
  42
  43 for sdk_dir in sdk_dirs_to_clone:
  44   sdk_dir_in_chromium = os.path.join(sdk_prefix_in_chromium, sdk_dir)
  45   dirs_to_clone[sdk_dir] = sdk_dir_in_chromium
  46
  47 def rev(source_dir, chromium_dir, mojo_revision):
  48   src_commit = system(["git", "rev-parse", mojo_revision],
  49                       cwd=source_dir).strip()
  50
  51   for input_dir, dest_dir in dirs_to_clone.iteritems():
  52     if os.path.exists(os.path.join(chromium_dir, dest_dir)):
  53       print "removing directory %s" % dest_dir
  54       system(["git", "rm", "-r", dest_dir], cwd=chromium_dir)
  55     print "cloning directory %s into %s" % (input_dir, dest_dir)
  56     files = system(["git", "ls-files", input_dir], cwd=source_dir)
  57     for f in files.splitlines():
  58       # Don't copy presubmit files over since the code is read-only on the
  59       # chromium side.
  60       if os.path.basename(f) == "PRESUBMIT.py":
  61         continue
  62
  63       exclude = False
  64       for excluded in sdk_dirs_to_not_clone:
  65         if f.startswith(excluded):
  66           exclude = True
  67           break
  68       if exclude:
  69         continue
  70
  71       # Clone |f| into Chromium under |dest_dir| at its location relative to
  72       # |input_dir|.
  73       f_relpath = os.path.relpath(f, input_dir)
  74       dest_path = os.path.join(chromium_dir, dest_dir, f_relpath)
  75       system(["mkdir", "-p", os.path.dirname(dest_path)])
  76       system(["cp", os.path.join(source_dir, f), dest_path])
  77     os.chdir(chromium_dir)
  78     system(["git", "add", dest_dir], cwd=chromium_dir)
  79
  80   mojo_public_dest_dir = os.path.join(sdk_prefix_in_chromium, "mojo/public")
  81   version_filename = os.path.join(mojo_public_dest_dir, "VERSION")
  82   with open(version_filename, "w") as version_file:
  83     version_file.write(src_commit)
  84   system(["git", "add", version_filename], cwd=chromium_dir)
  85
  86   # Reset preserved files that were blown away.
  87   for rel_path in preserved_chromium_files:
  88     preserved_path = os.path.join(sdk_prefix_in_chromium, rel_path)
  89     system(["git", "reset", "--", preserved_path])
  90     system(["git", "checkout", preserved_path])
  91
  92   commit("Update mojo sdk to rev " + src_commit, cwd=chromium_dir)
  93
  94 if len(sys.argv) < 2:
  95   print "usage: rev_sdk.py <mojo source dir> [<mojo revision>]"
  96   sys.exit(1)
  97
  98 # Allow override of the roll revision.
  99 revision = sys.argv[2] if len(sys.argv) == 3 else 'origin/HEAD'
 100 rev(sys.argv[1], chromium_root_dir, revision)